JPS637110B2 - - Google Patents
Info
- Publication number
- JPS637110B2 JPS637110B2 JP58064538A JP6453883A JPS637110B2 JP S637110 B2 JPS637110 B2 JP S637110B2 JP 58064538 A JP58064538 A JP 58064538A JP 6453883 A JP6453883 A JP 6453883A JP S637110 B2 JPS637110 B2 JP S637110B2
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- oil storage
- pipe
- tank
- storage tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000010802 sludge Substances 0.000 claims description 70
- 239000003921 oil Substances 0.000 claims description 39
- 239000011261 inert gas Substances 0.000 claims description 18
- 239000010779 crude oil Substances 0.000 claims description 15
- 239000011435 rock Substances 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 230000005484 gravity Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Landscapes
- Cleaning In General (AREA)
Description
【発明の詳細な説明】
本発明は、岩盤地下貯油施設における原油スラ
ツジの搬出法およびそのための設備に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for transporting crude oil sludge in a bedrock underground oil storage facility and equipment therefor.
原油の備蓄を大規模で行う施設として、地下岩
盤を利用した岩盤地下貯油施設の建設が提案され
ている。これは、地下の岩盤内に大きな空洞を堀
り、この空洞を貯油槽として大気と遮断した状態
で原油を貯蔵しようとするものであるが、そのさ
い、貯油層の約２％のスラツジの堆積が予想され
る。すなわち、例えば15万キロリツトルの貯油量
の施設を構築すれば、3000キロリツトルものスラ
ツジ堆積量となる。このスラツジの堆積は貯油槽
の深部、つまり、最下層の水層の上面（油水界
面）で起こることになるが、これを貯油状態にお
いて安全かつ確実に槽外に搬出する技術の開発が
望まれている。 The construction of underground rock storage facilities using underground rock has been proposed as a facility for storing crude oil on a large scale. This involves digging a large cavity in the underground bedrock and using this cavity as an oil storage tank to store crude oil while keeping it isolated from the atmosphere. is expected. In other words, for example, if a facility with a storage capacity of 150,000 kiloliters is built, the amount of sludge deposited will be 3,000 kiloliters. This accumulation of sludge occurs deep within the oil storage tank, that is, on the upper surface of the lowest water layer (oil-water interface), but it is desired to develop a technology to safely and reliably transport this sludge out of the tank while the oil is stored. ing.
本発明はこの要求を満たすことを目的としてな
されたもので、岩盤地下貯油施設の貯油層の下部
に形成された原油スラツジ層にまで貯油槽上方の
作業室からパイプを挿入し、このパイプ内にその
下方から不活性ガスを吹き込んで不活性ガスの上
昇流れをこのパイプ内に形成せしめ、この不活性
ガスの上昇流れによつて原油スラツジを作業室に
揚搬送することを特徴とするのであり、これによ
つてスラツジを安全かつ確実に槽外に搬出しよう
とするものである。 The present invention was made with the aim of satisfying this requirement, and involves inserting a pipe from a working chamber above the oil storage tank into the crude oil sludge layer formed at the bottom of the oil storage layer in a bedrock underground oil storage facility. It is characterized by blowing inert gas from below to form an upward flow of inert gas in this pipe, and by this upward flow of inert gas, the crude oil sludge is lifted and conveyed to the working chamber, This is intended to safely and reliably transport the sludge out of the tank.
以下に図面に示した本発明のスラツジ搬出設備
に従つて本発明内容を具体的に説明する。 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The content of the present invention will be specifically explained below in accordance with the sludge transport equipment of the present invention shown in the drawings.
第１図に示すように、本発明に従う岩盤地下貯
油施設のスラツジ搬出設備の基本構成は、岩盤貯
油槽１よりも上方に構築された作業室２と、この
作業室２内に設置されたスラツジ槽３と、このス
ラツジ槽３に上端が開口し貯油槽１の底部に構築
されたスラツジ溜４に下端が開口するスラツジ搬
出パイプ５と、このスラツジ搬出パイプ５の下端
近くの内部に開口端を有する不活性ガス送気管６
と、からなる。 As shown in FIG. 1, the basic configuration of the sludge transport equipment of the underground rock oil storage facility according to the present invention includes a working chamber 2 constructed above a rock oil storage tank 1, and a sludge transport facility installed in this working chamber 2. A tank 3, a sludge discharge pipe 5 whose upper end opens into the sludge tank 3 and whose lower end opens into the sludge reservoir 4 constructed at the bottom of the oil storage tank 1, and an open end inside near the lower end of the sludge discharge pipe 5. Inert gas air pipe 6 with
It consists of and.
岩盤貯油槽１は、地下の岩盤内に形成した大き
な空洞からなり、立坑７などには遮蔽盤８を設置
することにより地上大気とは実質的に遮断された
状態でこの中に原油９が貯蔵される。立坑７の位
置に対応する貯油槽の底面にはピツトを削設し、
このピツト回りに堰１０を取りつけることによつ
て、スラツジ溜４が形成される。貯油層９の下方
には水層１１が形成されるが、この油水界面１２
にスラツジが堆積することになる。この油水界面
１２に浮遊するスラツジをスラツジ溜４に集める
には、油水界面１２の高さを堰１０の高さより若
干高く維持しながら（搬出分だけ外部より水を供
給しながら）スラツジ溜４内の液とスラツジを搬
出する操作を行い、これによつて油水界面のスラ
ツジを堰１０を越えてピツト内に自然流入させる
処方を採用しもよいし、また温水の噴出や機械的
なかき寄せ手段などによるスラツジの強制収集処
法を採用してもよいが、本発明設備の場合には、
前者の処方が有利である。なお、貯油槽１内の空
間部分１３には不活性ガス例えば窒素ガスが封入
される。 The bedrock oil storage tank 1 consists of a large cavity formed in the bedrock underground, and crude oil 9 is stored therein in a state where it is substantially cut off from the surface atmosphere by installing a shielding board 8 in the shaft 7 etc. be done. A pit is cut in the bottom of the oil storage tank corresponding to the position of shaft 7,
By installing a weir 10 around this pit, a sludge reservoir 4 is formed. A water layer 11 is formed below the oil storage layer 9, and this oil-water interface 12
sludge will accumulate on the surface. In order to collect the sludge floating on the oil-water interface 12 into the sludge reservoir 4, the height of the oil-water interface 12 is maintained slightly higher than the height of the weir 10 (while supplying water from the outside for the amount to be carried out). It is also possible to carry out an operation to carry out the liquid and sludge, thereby allowing the sludge at the oil-water interface to flow naturally into the pit over the weir 10, or by jetting hot water or using mechanical scraping means. However, in the case of the equipment of the present invention,
The former prescription is advantageous. Note that the space 13 within the oil storage tank 1 is filled with an inert gas such as nitrogen gas.
図示の例において、作業室２は立坑７の中間に
構築され、この作業室２は下方の貯油槽１とは遮
蔽盤８によつて、また上方の坑道１５とは遮蔽壁
１６によつて隔離されている。スラツジ槽３はこ
の作業室２内に設置される。これは閉塞容器から
なり、スラツジと油の分離が行えるスラツジ分離
槽に構成しておくとよい。より具体的には、槽内
に堰１７を設けて小水槽に分割し、スラツジとそ
の上に浮く油相とをこの堰１７によつて比重差で
分離できるように構成すると共に蓋１８を気密に
取付けて閉塞容器とする。 In the illustrated example, the working chamber 2 is constructed in the middle of the shaft 7, and is separated from the oil storage tank 1 below by a shielding plate 8 and from the upper shaft 15 by a shielding wall 16. has been done. A sludge tank 3 is installed within this work chamber 2. This is preferably configured as a sludge separation tank consisting of a closed container and capable of separating sludge and oil. More specifically, a weir 17 is provided in the tank to divide it into small tanks, and the weir 17 separates the sludge from the oil phase floating on top based on the difference in specific gravity, and the lid 18 is airtight. Attach it to a closed container.
スラツジ搬出パイプ５は、このスラツジ槽３の
一つの小水槽の中にその上端が開口し、下端が貯
油槽内のスラツジ溜４の中に開口するように設置
される。そして、このスラツジ搬出パイプ５の下
方においてこのパイプ５内にガスを吹き込むノズ
ル２０が取付けられ、このノズル２０に不活性ガ
ス送気管６が接続される。この不活性ガス送気管
６は立坑７を経て系外の高圧窒素ガス源２１に連
なつている。一方、この不活性ガス送気管６と共
に、温水往管２２と温水返り管２３が併設されて
おり、これらはスラツジ溜４内に設けられた加熱
コイル２４に連結している。系外の温水源２５か
らこの加熱コイル２４に温水を通すことによつて
スラツジ溜４内のスラツジを加熱してこれを流動
化させるが、加熱コイル２４を通過した、または
通過しない、温水の全部または一部をスラツジ溜
４内に放出してスラツジを直接的に流動化しても
よい。 The sludge discharge pipe 5 is installed so that its upper end opens into one of the small water tanks of the sludge tank 3, and its lower end opens into the sludge reservoir 4 in the oil storage tank. A nozzle 20 for blowing gas into the pipe 5 is attached below the sludge discharge pipe 5, and an inert gas supply pipe 6 is connected to the nozzle 20. This inert gas supply pipe 6 is connected to a high-pressure nitrogen gas source 21 outside the system via a shaft 7. On the other hand, along with the inert gas supply pipe 6, a hot water outgoing pipe 22 and a hot water return pipe 23 are provided, and these are connected to a heating coil 24 provided in the sludge reservoir 4. By passing hot water from a hot water source 25 outside the system through this heating coil 24, the sludge in the sludge reservoir 4 is heated and fluidized, but all of the hot water that has or has not passed through the heating coil 24 is Alternatively, a portion may be discharged into the sludge reservoir 4 to directly fluidize the sludge.
他方、スラツジ槽３には、系外に通ずる不活性
ガス排出管２６、同じく系外に通ずるスラツジ引
抜き管２７が接続される。このスラツジ引抜き管
２７にはスラリーポンプ２８が介装され、スラツ
ジ槽３で比重分離されたスラツジを系外に強制搬
出する。また、スラツジ槽３で比重分離された液
相分を貯油槽１に戻すための原油リターン管２９
が、スラツジ槽３から貯油槽下部に向けて設置さ
れ、ポンプ３０によつて分離された油水を強制送
還する。 On the other hand, the sludge tank 3 is connected to an inert gas discharge pipe 26 that communicates with the outside of the system, and a sludge withdrawal pipe 27 that also communicates with the outside of the system. A slurry pump 28 is interposed in this sludge drawing pipe 27, and the sludge separated by specific gravity in the sludge tank 3 is forcibly carried out of the system. In addition, a crude oil return pipe 29 is provided for returning the liquid phase separated by specific gravity in the sludge tank 3 to the oil storage tank 1.
is installed toward the lower part of the oil storage tank from the sludge tank 3, and forcibly returns the oil water separated by the pump 30.
以上の構成になる本発明設備の運転にさいして
は、まずスラツジ槽３内の圧を貯油槽１内の圧よ
り若干低く維持する。スラツジ槽３内の圧の調整
は、この気密スラツジ槽３に接続される不活性ガ
ス排出管２６、スラツジ引抜き管２７、および原
油リターン管２９に介装の制御弁によつて行うこ
とができる。もつとも、貯油槽１内は前述のよう
に不活性ガスの封入により、高圧に保持されるの
が通常であるから、この場合には、この圧より若
干低い圧にスラツジ槽を維持することは特別の制
御を実施しなくとも自然に行い得る。ここで、弁
３１を開くと、この圧調整によつて、スラツジ搬
出パイプ５内には原油がその上端まで充満した状
態、つまり、貯油槽１とスラツジ槽３とが原油で
連結した状態、が形成される。このようにして、
貯油槽１とスラツジ槽３との間で液体通路が形成
されたなら、不活性ガスをパイプ５の下方から吹
き込む。これによつて、そのガス気泡はパイプ５
内を上昇すると同時にその上昇流に同伴してスラ
ツジ溜４内のスラツジもパイプ５内を上昇してス
ラツジ槽３に揚搬出される。スラツジ槽３内に揚
げられたスラツジは油水と分離されたあと、スラ
ツジ引抜き管２７によつて系外に搬出され、油水
は原油リターン管２９によつて貯油槽１にもどさ
れる。 When operating the equipment of the present invention having the above configuration, first, the pressure in the sludge tank 3 is maintained slightly lower than the pressure in the oil storage tank 1. The pressure inside the sludge tank 3 can be adjusted by control valves installed in the inert gas discharge pipe 26, the sludge withdrawal pipe 27, and the crude oil return pipe 29 connected to the airtight sludge tank 3. However, as mentioned above, the inside of the oil storage tank 1 is normally maintained at a high pressure by filling in an inert gas, so in this case, it is especially important to maintain the sludge tank at a pressure slightly lower than this pressure. This can be done naturally without any control. When the valve 31 is opened, this pressure adjustment creates a state in which the sludge discharge pipe 5 is filled with crude oil up to its upper end, that is, a state in which the oil storage tank 1 and the sludge tank 3 are connected with crude oil. It is formed. In this way,
Once a liquid passage is formed between the oil storage tank 1 and the sludge tank 3, inert gas is blown into the pipe 5 from below. This causes the gas bubbles to be removed from pipe 5.
At the same time, the sludge in the sludge tank 4 also rises in the pipe 5 along with the upward flow and is lifted and transported to the sludge tank 3. After the sludge lifted in the sludge tank 3 is separated from oil and water, it is carried out of the system through a sludge withdrawal pipe 27, and the oil and water is returned to the oil storage tank 1 through a crude oil return pipe 29.
なお、不活性ガス吹き込み量の調節を適切に行
えば、スラツジの排出量と速度の制御ができると
共に、場合によつては、排水と原油の払出も実施
できることになる。 If the amount of inert gas blown is appropriately adjusted, the amount and speed of sludge discharge can be controlled, and in some cases, drainage and crude oil can also be discharged.
以上説明したように、本発明に従えば、岩盤地
下貯油施設の深部の堆積スラツジを不活性ガスに
よつて系外に揚重できるので爆発の危険等がなく
またシステムも比較的簡単であり、さらに運転の
仕方によつてはスラツジのみならず水や原油の揚
液にも利用できるなど、岩盤地下貯油施設のスラ
ツジ搬出にとつて安全かつ有益な方法および設備
が提供さる。 As explained above, according to the present invention, the accumulated sludge in the deep part of the rock underground oil storage facility can be lifted out of the system using inert gas, so there is no risk of explosion, etc., and the system is relatively simple. Furthermore, depending on how it is operated, it can be used not only for sludge but also for pumping water or crude oil, thereby providing a safe and useful method and equipment for transporting sludge from underground rock storage facilities.
第１図は本発明に従う岩盤地下貯油施設のスラ
ツジ排出設備の全体を示す機器配置略断面図であ
る。
１……岩盤貯油槽、２……作業室、３……スラ
ツジ槽、４……スラツジ溜、５……スラツジ搬出
パイプ、６……不活性ガス送気管、７……立坑、
９……貯油層、１０……堰、１１……水層、１２
……油水界面。
FIG. 1 is a schematic cross-sectional view of the equipment layout showing the entire sludge discharge equipment of a rock underground oil storage facility according to the present invention. 1...Bedrock oil storage tank, 2...Work room, 3...Sludge tank, 4...Sludge reservoir, 5...Sludge transport pipe, 6...Inert gas pipe, 7...Vertical shaft,
9... Oil reservoir, 10... Weir, 11... Water layer, 12
...Oil-water interface.
Claims (1)
た原油スラツジ層にまで貯油槽上方の作業室から
パイプを挿入し、このパイプ内にその下方から不
活性ガスを吹き込んで不活性ガスの上昇流れをこ
のパイプ内に形成せしめ、この不活性ガスの上昇
流れによつて原油スラツジを作業室に揚搬送する
ことからなる岩盤貯油槽のスラツジ搬出法。 ２ 岩盤貯油槽１よりも上方に構築された作業室
２と、この作業室２内に設置されたスラツジ槽３
と、このスラツジ槽３に上端が開口し貯油槽１の
底部に構築されたスラツジ溜４に下端が開口する
スラツジ搬出パイプ５と、このスラツジ搬出パイ
プ５の下端近くの内部に開口端を有する不活性ガ
ス送気管６と、からなる岩盤貯油槽のスラツジ搬
出設備。[Claims] 1. A pipe is inserted from a working chamber above the oil storage tank into the crude oil sludge layer formed at the bottom of the oil storage layer of a bedrock underground oil storage facility, and an inert gas is blown into the pipe from below. A method for transporting sludge from a rock oil storage tank, which comprises forming an upward flow of inert gas in the pipe, and transporting crude oil sludge to a work chamber by the upward flow of inert gas. 2. A working room 2 constructed above the bedrock oil storage tank 1, and a sludge tank 3 installed within this working room 2.
A sludge discharge pipe 5 whose upper end opens into the sludge tank 3 and whose lower end opens into the sludge reservoir 4 constructed at the bottom of the oil storage tank 1; A sludge transport facility for a bedrock oil storage tank consisting of an active gas air pipe 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58064538A JPS59189983A (en) | 1983-04-14 | 1983-04-14 | Sludge feed-out method and equipment of rock oil storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58064538A JPS59189983A (en) | 1983-04-14 | 1983-04-14 | Sludge feed-out method and equipment of rock oil storage tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59189983A JPS59189983A (en) | 1984-10-27 |
| JPS637110B2 true JPS637110B2 (en) | 1988-02-15 |
Family
ID=13261097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58064538A Granted JPS59189983A (en) | 1983-04-14 | 1983-04-14 | Sludge feed-out method and equipment of rock oil storage tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59189983A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5488667A (en) * | 1977-12-26 | 1979-07-13 | Oo Bii Ii Kk | Method of cleaning oil tank |
-
1983
- 1983-04-14 JP JP58064538A patent/JPS59189983A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5488667A (en) * | 1977-12-26 | 1979-07-13 | Oo Bii Ii Kk | Method of cleaning oil tank |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59189983A (en) | 1984-10-27 |
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